Table 3 The changes in the pharyngeal airway passage (PAP) dimensions among treatment and control group subjects

DNP (mm) (Ptm-UPW)

12.84 ± 5.77

13.76 ± 5.17

0.254^NS

12.01 ± 5.78

13.04 ± 5.15

0.065^NS

0.911^NS

HNP (mm) (PNS to Ba-N plane)

21.76 ± 1.78

21.93 ± 2.22

0.471^NS

21.25 ± 1.85

21.78 ± 2.20

0.034*

0.258^NS

DOP (mm) (U-MPW)

9.19 ± 2.03

10.73 ± 2.45

0.000***

7.81 ± 2.13

8.70 ± 1.80

0.010*

0.013*

DHP (mm) (V-LPW)

12.53 ± 2.80

14.30 ± 2.99

0.005**

12.84 ± 2.12

13.21 ± 2.15

0.516^NS

0.081^NS

SPL (mm) (U-PNS)

30.56 ± 3.41

30.01 ± 3.25

0.136^NS

30.78 ± 2.85

30.88 ± 3.25

0.740^NS

0.365^NS

SPT (mm) (Maximum thickness of the soft palate)

7.24 ± 1.15

7.48 ± 1.02

0.135^NS

7.11 ± 0.76

7.09 ± 0.96

0.845^NS

0.287^NS

SPI (°) (Ptm per × PNS-U)

46.75 ± 4.72

44.22 ± 3.90

0.019*

42.35 ± 5.40

44.30 ± 4.82

0.068^NS

0.045*